﻿using CoreCms.Net.Core.SilkyCore.Utils;
using CoreCms.Net.Loging;
using Microsoft.AspNetCore.Http;
using Newtonsoft.Json;
using Silky.Core.Extensions;

namespace CoreCms.Net.Bz.Middlewares
{
    /// <summary>
    /// 中间件
    /// 记录IP请求数据
    /// </summary>
    public class IPLogMildd
    {
        /// <summary>
        ///
        /// </summary>
        private readonly RequestDelegate _next;

        /// <summary>
        ///
        /// </summary>
        /// <param name="next"></param>
        public IPLogMildd(RequestDelegate next)
        {
            _next = next;
        }

        public async Task InvokeAsync(HttpContext context)
        {
            // 过滤，只有接口
            if (context.Request.Path.Value != null && (context.Request.Path.Value.Contains("api") || context.Request.Path.Value.Contains("Api")))
            {
                context.Request.EnableBuffering();
                try
                {
                    // 存储请求数据
                    var dt = DateTime.Now;
                    var request = context.Request;
                    var requestInfo = JsonConvert.SerializeObject(new RequestInfo()
                    {
                        Ip = GetClientIp(context),
                        Url = request.Path.ObjectToString().TrimEnd('/').ToLower(),
                        Datetime = dt.ToString("yyyy-MM-dd HH:mm:ss"),
                        Date = dt.ToString("yyyy-MM-dd"),
                        Week = CommonHelper.GetWeek(),
                    });

                    if (!string.IsNullOrEmpty(requestInfo))
                    {
                        Parallel.For(0, 1, e =>
                        {
                            LogLockHelper.OutSql2Log("RequestIpInfoLog", "RequestIpInfoLog" + dt.ToString("yyyy-MM-dd-HH"), new string[] { requestInfo + "," }, false);
                        });
                        request.Body.Position = 0;
                    }
                    await _next(context);
                }
                catch (Exception)
                {
                }
            }
            else
            {
                await _next(context);
            }
        }

        public static string GetClientIp(HttpContext context)
        {
            var ip = context.Request.Headers["X-Forwarded-For"].ObjectToString();
            if (string.IsNullOrEmpty(ip))
            {
                if (context.Connection.RemoteIpAddress != null)
                {
                    ip = context.Connection.RemoteIpAddress.MapToIPv4().ObjectToString();
                }
            }
            return ip;
        }
    }
}